What is the product?
(7x) (2x + 5)(x² - 4x-9)
14x5 – x4 - 46x® - 58x2 - 20%-45
14x6 – 56x5-91x4 - 140x2 – 315x2
14x7 - 56x6 – 126x + 35x4 – 140x® - 315x2
14x12 - 182x® + 35x4 - 455x2

What is the smallest integer n such that n\sqrt{2} is greater than 20

Which expression is equivalent to (3^2)^-2 a.-81 b.-12 c.1/81 d.1/12

Someone answer this asap rn for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =